skim wiv joint cement

House extnsion and a new bedroom is half new build taped. half existing room already painted with matt emlsion. teh Client wants all the walls skimmed with jointcement before new decoration. Would i be better to PVA the older walls first? Thanx!

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skim with joint cement

i would pva walls first better to be safe than sorry,i skim with joint cement all the time only had problems when customer hasnt washed wallpaper paste off.you will need to do 2 coats as first coat tends to pull a bit

personally i would skim the walls with readymix filler as it sticks to anything..... where as your fast set filler if you put it on a painted surface it bosses,splits,falls off as theres nothing to stick to. even if you go to sand it youl see it falls off just dosnt stick we always have and always use readymix promix lite.jpg

as for replacing internal and external corner tapes we pish this down a bit and apply it with a brush (now a corner roller as a wise man told me ) as it sticks perfect this bonds to painted surfaces then give it a skim of fast set and another skim of this and youl be sorted